The Bosch B308 Octo-Output Module delivers versatile and programmable output control for intrusion and fire alarm systems. Designed to integrate seamlessly with Bosch’s Solution 2000, 3000, and 4000 control panels, this expansion module offers eight independent Form C relays, each rated at 1 A @ 24 VDC. Whether you're managing HVAC systems, door locks, or emergency fire signaling devices, the B308 ensures robust and reliable relay switching under a wide range of building automation or security scenarios.

Ideal for industrial, commercial, and institutional environments, the B308 enables advanced control and monitoring via its SDI2 bus connection. Relays can be activated by specific system events such as alarms, faults, or user commands through control panel keypads. Its compact design and easy-to-read switch addressing simplify installation and configuration, even for large multi-module setups.

What’s Included in the Box

• 1 x Bosch B308 Octo-Output Module

• 1 x Interconnect Wiring Connector

• 1 x Hardware Pack

• 1 x Installation & User Literature Pack

Main Features

• Eight programmable Form C relay outputs

• Dry contact switching, rated 1 A at 24 VDC

• SDI2 bus compatibility for reliable communication

• Easy switch addressing for simplified configuration

• Remote output control via control panel keypads

• Supports critical building system interfacing: HVAC, door release, annunciators

• Scalable integration: up to 12 modules (panel-dependent)

• UL & FM approved for intrusion and fire alarm system applications

Detailed Specifications

• Module Dimensions: 7.35 cm x 12.7 cm x 1.5 cm

• Relay Contact Rating: 1 A @ 24 VDC

• Relay Configuration: Form C (Normally Open & Closed)

• Power Consumption: 150 mA max (22 mA digital section + 16 mA per energized relay)

• Voltage Input: 12 VDC nominal

• Wiring Requirements:

  • 22 AWG (0.65 mm): max 137 m (400 ft)

  • 18 AWG (2 mm): max 305 m (1000 ft)

  • Unshielded wire only

• Bus Compatibility: SDI2

• Certifications:

  • FCC Part 15 Class B

  • UL 365, 609, 1023, 1076, 1610, 864, 985

  • ULC-S303, ULC-S304-06, ULC-ORD C1023, and more

  • CSFM Approved

Compatible Panels

• Bosch Solution 2000, 3000, 4000

• B5512 (up to 5 modules)

• B4512 (up to 3 modules)

• D9412GV4 (up to 12 modules)

• D7412GV4 (up to 6 modules)

• D7212GV4 (up to 2 modules)

Warranty Information

Bosch B308 modules come with a 3-year manufacturer warranty, covering defects in materials and workmanship. Warranty service is handled through authorized Bosch service centers or direct brand communication in Australia and New Zealand.

Brand Description

Bosch Security Systems is a global leader in innovative security and safety solutions. Known for high-quality engineering and cutting-edge technologies, Bosch delivers trusted systems tailored for a wide range of industries—from residential to commercial and industrial environments.

SKU

B308

Practical Use Scenarios

• Fire Alarm Systems: Activate remote annunciators or display system status

• Building Automation: Interface with HVAC systems, lighting, and door locks

• Security Systems: Trigger alarms or alerts based on system faults or intrusions

• Commercial Access Control: Remotely control output devices like magnetic locks

• Industrial Safety Compliance: Automate emergency ventilation or stairwell pressurization

Datasheets or Downloadable Resources

• Download Datasheet
• Download Installation Manual
• Download Misc Document 1

Excellence for the Australian and New Zealand Market

• Fully compliant with Australian and New Zealand safety and electrical standards

• Sourced exclusively through authorized Bosch distributors

• NDSS and UL certified for high-reliability fire and intrusion systems

• Backed by Bosch’s local support and direct warranty service

• Optimized for use in industrial, commercial, and institutional facilities common in ANZ markets

Frequently Asked Questions (FAQs)

Q1: Is the Bosch B308 (Product Code: B308) compatible with all Bosch Solution panels?
A1: Yes, the B308 is fully compatible with Bosch Solution 2000, 3000, and 4000 panels as well as B and GV4 series control panels for broader system integration.

Q2: What type of output relays does the Bosch B308 (Product Code: B308) provide?
A2: The B308 provides eight Form C relays, each offering both normally open and normally closed contact configurations, rated at 1 A @ 24 VDC.

Q3: Can I control the Bosch B308 (Product Code: B308) relays remotely?
A3: Yes, relays on the B308 can be programmed for remote control through compatible Bosch panel keypads.

Q4: How many Bosch B308 (Product Code: B308) modules can be added to a system?
A4: Depending on the control panel model, you can connect up to 12 B308 modules. For example, the D9412GV4 supports up to 12 units.

Q5: Is the Bosch B308 (Product Code: B308) approved for fire alarm applications in Australia?
A5: Yes, the B308 holds UL 864 and CSFM certifications and is suitable for fire alarm system integrations within Australia and New Zealand